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/* $NetBSD: cpu_topology.h,v 1.3 2021/12/11 19:24:20 mrg Exp $ */
/*
* Copyright (c) 2020 Matthew R. Green
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _ARM_CPU_TOPOLOGY_H_
#define _ARM_CPU_TOPOLOGY_H_
/*
* ARMv7 and ARMv8 compatible CPU topology support.
*
* arm_cpu_do_topology(cpuinfo)
*
* Call arm_cpu_do_topology() in cpu_attach(). It will update the topology
* view of relative speed.
*
* The CPU frontend can set the "capacity_dmips_mhz" property for this CPU,
* and arm_cpu_do_topology() will update the system view of this and other
* CPUs relative speeds
*
* arm_cpu_topology_set(cpuinfo, mpidr)
*
* arm_cpu_topology_set() is provided for locore and the boot CPU,
* and application CPUs. It updates data for the current CPU.
*/
#include <sys/param.h>
#include <sys/cpu.h>
void arm_cpu_do_topology(struct cpu_info * const);
void arm_cpu_topology_set(struct cpu_info * const, mpidr_t);
#endif /* _ARM_CPU_TOPOLOGY_H_ */
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